This paper focuses on the application of state design pattern in the secure user plane location(SUPL) and assisted global positioning system(A-GPS) based SUPL location platform(SLP).

• 本文对State设计模式在基于安全用户平面(SUPL)的辅助全球定位系统(A-GPS)技术的定位平台(SLP)中的应用进行阐述。